add checking for cfg(features = ...)
*Please write a short comment explaining your change (or "none" for internal only changes)*
changelog: [`maybe_misused_cfg`]: check if `#[cfg(feature = "...")]` misused as `#[cfg(features = "...")]`
I've found that there is no indication when `#[cfg(features = "...")]` is used incorrectly, which can easily make mistakes hard to spot. When I searched for this code on github, I also found many misuse cases([link](https://github.com/search?q=%23%5Bcfg%28features+language%3ARust&type=code)).
PS: This clippy name is just a temporary name, it can be replaced with a better name.
Add spans to `clippy.toml` error messages
Adds spans to errors and warnings encountered when parsing `clippy.toml`.
changelog: Errors and warnings generated when parsing `clippy.toml` now point to the location in the TOML file the error/warning occurred.
Explain which paths clippy searches for configuration in docs
Fixes https://github.com/rust-lang/rust-clippy/issues/9921.
Adds information on where to place the configuration files, it may be a bit verbose. Also added a comment to the section of the code where the search happens, to hopefully prevent changing that without updating the docs.
changelog: Make documentation about where to place configuration files clearer.
new lint: `missing_fields_in_debug`
Fixes#10429
This PR adds a new lint that looks for manual `Debug` implementations that do not "use" all of the fields.
This often happens when adding a new field to a struct.
It also acts as a style lint in case leaving out a field was intentional. In that case, it's preferred to use [`DebugStruct::finish_non_exhaustive`](https://doc.rust-lang.org/stable/std/fmt/struct.DebugStruct.html#method.finish_non_exhaustive), which indicates that there are more fields that were explicitly not shown.
```
changelog: [`missing_fields_in_debug`]: missing fields in manual `Debug` implementation
```
move some strings into consts, more tests
s/missing_field_in_debug/missing_fields_in_debug
dont trigger in macro expansions
make dogfood tests happy
minor cleanups
replace HashSet with FxHashSet
replace match_def_path with match_type
if_chain -> let chains, fix markdown, allow newtype pattern
fmt
consider string literal in `.field()` calls as used
don't intern defined symbol, remove mentions of 'debug_tuple'
special-case PD, account for field access through `Deref`
Remove lint name and category fields from the new lint issue form
changelog: none
Picking a name/category is something the implementers/reviewers tend to cover anyway, I think asking people to come up with it at the time of their suggestion is more of a barrier than it's worth
Inspired by the mention in #10849
[`wildcard_imports`] Modules that contain `prelude` are also allowed
This commit fixes#10846 by checking if the path segment contains the word "prelude", allowing us
`use module_prelude::*`.
changelog: [`wildcard_imports`]: Modules that contain `prelude` are also allowed
`EarlyBinder::new` -> `EarlyBinder::bind`
for consistency with `Binder::bind`. it may make sense to also add `EarlyBinder::dummy` in places where we know that no parameters exist, but I left that out of this PR.
r? `@jackh726` `@kylematsuda`
Uplift `clippy::invalid_utf8_in_unchecked` lint
This PR aims at uplifting the `clippy::invalid_utf8_in_unchecked` lint into two lints.
## `invalid_from_utf8_unchecked`
(deny-by-default)
The `invalid_from_utf8_unchecked` lint checks for calls to `std::str::from_utf8_unchecked` and `std::str::from_utf8_unchecked_mut` with an invalid UTF-8 literal.
### Example
```rust
unsafe {
std::str::from_utf8_unchecked(b"cl\x82ippy");
}
```
### Explanation
Creating such a `str` would result in undefined behavior as per documentation for `std::str::from_utf8_unchecked` and `std::str::from_utf8_unchecked_mut`.
## `invalid_from_utf8`
(warn-by-default)
The `invalid_from_utf8` lint checks for calls to `std::str::from_utf8` and `std::str::from_utf8_mut` with an invalid UTF-8 literal.
### Example
```rust
std::str::from_utf8(b"ru\x82st");
```
### Explanation
Trying to create such a `str` would always return an error as per documentation for `std::str::from_utf8` and `std::str::from_utf8_mut`.
-----
Mostly followed the instructions for uplifting a clippy lint described here: https://github.com/rust-lang/rust/pull/99696#pullrequestreview-1134072751
````@rustbot```` label: +I-lang-nominated
r? compiler
-----
For Clippy:
changelog: Moves: Uplifted `clippy::invalid_utf8_in_unchecked` into rustc
